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Charging and discharging circuit for electrical system

A charge-discharge circuit and electrical system technology, applied in the field of machinery and electricity, can solve the problems of limited installation space, unfavorable heat dissipation of current-limiting circuits, and the inability to install large-power consumption energy release devices, etc., to achieve improved charge-discharge efficiency and strong mobility Effect

Active Publication Date: 2014-05-21
ZOOMLION HEAVY IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the former needs an external power supply, which is not conducive to field work; the installation space of the latter is limited by the size of the driver, which makes it impossible to install a large power dissipation device and is not conducive to the heat dissipation of the current limiting circuit

Method used

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  • Charging and discharging circuit for electrical system
  • Charging and discharging circuit for electrical system
  • Charging and discharging circuit for electrical system

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Embodiment Construction

[0015] The main realization principles, specific implementation modes and corresponding beneficial effects of the technical solutions of the embodiments of the present invention will be described in detail below in conjunction with each accompanying drawing.

[0016] In order to solve the problems existing in the prior art, an embodiment of the present invention provides a charging and discharging circuit of an electrical system, such as figure 1 As shown, it includes: an energy storage unit 101, a motor driver 102, a storage battery 103, and also includes:

[0017] A logic control unit 104 is connected to the energy storage unit 101 and the motor driver 102 through a data bus;

[0018] The switch control unit 105 is connected with the logic control unit 104 and the storage battery 103, receives the logic control signal sent by the logic control unit 104, and controls the opening and closing of each touch point located in the voltage dividing unit 106;

[0019] The voltage di...

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Abstract

A charging and discharging circuit for an electrical system, comprising: an energy-storing unit (101), an electromotor driver (102), a battery (103), and further comprising: a logic control unit (104) connected to the energy-storing unit (101) and the electromotor driver (102) via a data bus; a switch control unit (105) connected to the logic control unit (104) and the battery (103) for receiving a logic control signal sent by the logic control unit (104) and controlling the switching on and off of individual touch points in a voltage dividing unit (106); the voltage dividing unit (106) being connected to the energy-storing unit (101) and the electromotor driver (102) for receiving a switch control signal sent by the switch control unit (105) to switch off or on the individual touch points so as to adjust the resistance values of the voltage dividing resistance. By using the charging and discharging circuit for an electrical system, the resistance value of the voltage dividing resistance can be adjusted at a proper time to improve the efficiency of charging and discharging, and a high flexibility is achieved.

Description

technical field [0001] The invention relates to the technical field of machinery and electricity, in particular to a charging and discharging circuit of an electrical system. Background technique [0002] The auxiliary electric power system of the hybrid electric machinery includes: electric energy storage unit, electric motor / generator and its driver, and system control unit. When designing and selecting, in order to improve the efficiency of energy use, a high-voltage drive system is often used, so it is necessary to select a high-voltage energy storage device and electrical accessories that match the high-voltage drive system. Usually, during equipment repair or maintenance, it is necessary to discharge the electric energy of the high-voltage energy storage device through an external load, so that the voltage drops to a safe voltage. Because mechanical equipment often works in various remote areas after leaving the factory, and the discharge energy release device is larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/00H02P7/20H02J7/0063H02J7/007182
Inventor 陈华东荣张迁
Owner ZOOMLION HEAVY IND CO LTD
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